A B-17G Flying Fortress and a B-52H Stratofortress fly in a heritage flight formation May 13 during the 2006 Defenders of Liberty Airshow at Barksdale Air Force Base, La. These two aircraft represent 70 years of "fortresses." It was the first time in 50 years that they flew together in formation. (U.S. Air Force photo/Master Sgt. Michael A. Kaplan)

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The Aircraft wallpapers, desktops and backgrounds are provided solely for use as personal desktop backgrounds. They may not be redistributed or used in any other way without prior permission.